Grid Calculator By N1MU
Calculate Grid Square
Enter your latitude and longitude. If you know your latitude and
longitude in decimal degrees (e.g., 41.714), enter those values into the
"degrees" fields and leave the "minutes" and
"seconds" fields blank. If you know your latitude and longitude in
degrees, minutes and seconds, enter the values into the appropriate fields.
(Don't enter both decimal degrees and minutes/seconds!)
Be sure the correct directional buttons are selected.
Note that only the integer degrees (not the fractional part or the minutes
and seconds) are needed to calculate the 4-digit grid square, but providing the
exact values will allow the program to calculate the distance from the
specified location to the nearest edges of the grid square. This is useful
for determining how accurately you must know the location to be sure of the
correct grid square. Finding the 6-digit grid square requires degrees and
this form is linked to the ARRL Grid Calculator